Stove-rim-polishing machine.



G. L. WALLACE & W. VAN P. STBIGER.- .STQVB RIM POLISHING MACHINE.

APPLICATION FILED MAR. 12, 1910. 1 042 569, Patented Oct. 29, 1912.

3 SHEETS'SHEET 1.

iA/M/vro/zs 6W1; George L. Walace 1/ MQOOQIO G. L. WALLACE & W. VAN P.STEIGER.

STOVE RIM POLISHING MACHINE.

APPLIOATION FILED MAR.12, 1910.

3 SHEETS SHBET 2.

hiented Oct. 29', 1912.

G L. WALLACE 85 W. VAN P. STBIGBR.

STOVE RIM POLISHING MACHINE. APPLICATION FILED MAR. 12. 1910.

Lw fizfifigo Patented 001;. 29, 1912.

3 SHEETS-SHEET 3.

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Application filed mil-ends, 1910. Serial no. 548,825.

To all whom it mag I concern Be itknown that we, GEORGE L. WALLACE andW'AL'rnr VAN PA'I'I'E-N STEIGER, citizens of the United States, andresidents of 5 Bridgeport, in the county of Fairfield and State ofConnecticut, have invented certain new and useful Im rovements in StoveRim-Polishing Mach nes, of which the following is a specification.

This invention relates to polishing machines and particularly-teamachine for buflingand polishing stove,

so called or similar work having annular curved surfaces such ascircular PIECE, or

1 pieces usually attached to cylinder types of coal oil stoves and usedis a guard' or foot rest. 7 Inpractice these stove rims are formed ofsheet or cast metal and their faces polished both preparatory" to andafter plating; someof them are made in the form of complete rings whileothers represent but a portion of the ring. The peripheral surfaces ofsaid rings are usually oval so I [ad ustment comprises a rack '17 formedthat in cross section they represent subclass in a quick, efficientandinexpensive way, thereby accomplishing a piece of work Rapp'hed to thesquared end of the said shaft 18. is secured to the forward end of thisspindle which has heretofore been done largely by handat a much greatercost than can be done by our machine.

Upon the accompanying three sheets .of

drawings forming a part ofthis specification similar characters ofreference will be throughout the several figures and of which, Figure'l,shows a front view of our .im-

4 proved rim polishing machine in operative represents a horizontal basethat is sup-* ported by legs 11+ 11 =secure'dto its oppe-- site ends.This base" is ofa special conistruction and serves to 'support the.several parts of the machihdexefitth counter shafts for operating thesame. Toth'e rear 5 of this base is secured an upwardlydisposed bufiingand stantially a quarter circle.v We have therej fore produced thefollowing described machine for-polishing metal pieces of the abovejusting shaft 18' bracket 12 and adapted to be operated by tbracket-will be seen at the right of the bed i and 1s adjusted to theright or left by reason of a rack 12' mounted in the rear portion of thebase and engaged by an adjustmg inion 13 secured upon a short shaftjourn ed in the said bracket 12 and designed to adapt the machine toaccommodate various sized rims. Referring to this mechanism (see Figs. 1and 2) 13 represents a driven pulley thatis mounted upon a short shaft14 ournaled 1n bearings 14 secured to the bracket 12 and upon whichshaft is mounted a worm 15'that mesheswith and drives a gear 15' securedto the rear end of the chuck sp ndle 16 mounted in a sleeve bearing 16'that is made adjustable longitudinally'within the bearings 17 of thebracket 12 to bring the chuck into properoperati-ve relation to thepivotal point 54 of polishing Wheel Patented 0ctQ29d9123 bracket. Themeans for accomplishing this A upontheunderside of the sleeve and engaged by a'pimon 18 mounted [upon an adjournaled within the means of awrench or other suitable tool A chuck 19 of any suitable character forthe attachment of the stove rim 20.

Upon the rear end portion of the spindle 16 is secured a worm'21 thatmeshes with and drives a worm gear22 upon a vertical shaft '23-journaled in suitable. bearings secured to the bracket 12, and hassecured to its lower end a bevel, gear 24 that meshes with a similarbevel gear attached to a cross shaft 25 also journaled in the bracket'12. This cross shaft is further provided with a bevel gear 26 whichmeshes with gear 26 slidably keyed to shaft 27 and' housed in bracket 12to move therewith/ This shaft 27 is mounted in the base 10' beforereferred to and operated-by reason of power transmitted from the drivingpulley 13 through the worm, gear and shaft connections before referredto.

A saddle 28 is adjustably mounted upon :ways' 2? of the base andarranged across the front side thereof. This saddle through additionalconnections serves to carry the'buifing-onpolishing wheel which asdesigned tie may be'moved to and from the stove rim on the chuck, andlikewise be swung around so as to operate upon both the periphery andside portion thereof. The said adjusting mechanism is designed to beoperated by 'foot power and consists of a rocker shaft 30 lever 34hungfree upon the rocker shaft,

will through the segments and idler gear impart an upward movement ofthe other lever 33 and thus turn the rocker shaft in one direction whilea similar downward movement of the. other lever 33 will turn the shaftin the opposite direction and againraise the first named lever 34. Uponthe other end on this rocker shaft is secured an arm 38 having a camgroove 39 in its outer face that engages a pin 40 secured on theunderside of the before mentioned saddle 28 and whereby the said saddleis moved longitudinally upon the ways of the base so as to shift thebufling wheel to and. from the work to be operated upon. A swingingbracket 41 is hinged to the said saddle and is provided with mechanismfor swinging the same which is o erated from the before mentionedlongitu inal shaft 27.. This bracket carries a polishing wheel spindle42 that is driven through a separate belt connection from an overheadcounter shaft which we will later describe. Bearings 43 and 44 areformed upon the rear side of the saddle 28 and disposed intermediate thetop and bottom portion of the bed to carry a shcrtshaft 45 and engage aear 46 slidably mounted upon the longitug Upon the short shaft ismounted a grooved cylinder cam 47 and gear 48 which latter meshes withthe before mentioned gear 46 upon the driven shaft 27. Upon the innerside of the gear 46 is formed one member49 of a clutch thatis designedto be engaged with or disengaged from the adj oiningclutch member 50secured to the drlven shaft 27 and whereby the gears, cam and connectingparts may be connected and driven by the said shaft. A slide rack 51fitted in ways on the saddle bears a pin 52 that engages the beforementioned groove of the cam so that the rack is slid backward andforward with the rotation of the cam. The toothed edge of the rackmeshes with a segment 53 having an extended arm to which the swingingbracket 41 is secured. The said segment is secured to inal shaft 27secured to a vertically disposed pivot 54 that passes freely throughbearings 55 of the saddle, and is engagev lower ends by the saidswinging. rackets and formsa pivot from which the bracket not only'swin'gs but toward and from which both the bufiing wheel and chuckareadjusted. The top of the swinging bracket 41 is provided with adovetailed way 56 to receive a'correspondin ly dovetailed base portionof a standard 5 In the upper end of this standard is journaled thespindle 42 that carries the polishing or bufling wheel 58 upon" one endand a belt pulley 59 upon the other end. An arm 60 is secured to thesaddle and carries an adjusting nut 61 that engages a screw carried bythe standard 57 and whereby the standard and its operative at its up erand parts may be adjusted upon its bracket. A

spring 61 is mounted upon this nut in a way to form a cushion, so tospeak, for the bufing. wheel and better to overcome any uneven surfaceofthe stove rims when being polished.

From the foregoing it will be seen that the swinging bracket and partscarried thereon are swun in and out with each complete turn of t e camso as to move the bufling or polishing wheel back and forth across theface and side of rotating stove rim mounted upon the chuck.

The buflin or poli hing wheel 58 is driven throng its spindle and pulleyfrom an overhead counter shaft that is made to move to accommodate theradial swinging movement of the said bufling wheel. This movable devicecomprises a vertically disposed shaft 62that is hung from the ceilingdirectly above the pivot 54 for the swinging arm and upon' this shaft ismounted a driven and driving pulley 63 and 64 respectively. Upon thisshaft is also hung a bracket 65 to the lower portion of which is-secureda pul-- ley 66 that is connected by a oable 67 over suitable guidepulley 68 with a similar grooved pulley 69 secured to the lower end ofthe pivot 54 and whereby the cable runs back and forth with-the movementof the .pivot and its swinging bracket in a wayto operate the-uppergrooved-pulley 66 and. its

bracket lIi" l1I11S( )n with the movement of the said swinging bracketwhereby maintaining the driving mechanism of the counter-shaft injuxtaposition to the pulley and polishing spindle. The belt 70 forforming this driving connection is carried around the driving pulley 64then over idlers 71-71 secured to the sldes of the bracket 65 and thenaround the spindle pulley 59.

In the operation of our machine the rims 20 are secured to the chuck 19,whereby the are rotated duringthe operation of the butt ing wheel Whichis driven at a high rate of speed and moved back and forth across the mmand engaged therewith byan operation down of the foot lever '33. Thismovement ofthe j saddleand its parts'likewise, connects the clutchmembers 49 and 50 is a way to oper- I rack .51 and swinging arm in a wayto gui e the polishing wheel backv and forth across the face of the rim.When v ate the cam 47, i

this operation is completed the other foot lever '34 would be operatedin a way to shift the slide 28 a swinging gate thereon and itsbufiingwheel away from the rim. All ad-' justments of both the chuck andbufling wheel are made toward and from the pivotal pin 54. i

Having thus described our invention what we claim and desire to secureby Letters Patent is: v

1. In a polishing machine for annular work, the combination of a drivenrotatable work holding chuck adjustable axially of and transverselytoitsaxis of rotation, a power driven resiliently mounted polishing .wheeladjustable to and from the work holding. chuck and having a swinging'motion around the face of the work, said swinging motion being deriveddirectly and positivel from the rotation of the work hold and arrangedto swing around an axis coincident with the center of the generating,

curve of the polished surface, and driving pulleys mounted in a frameswinging on a center coincident with the axis of the .pol-' ishing wheelsubstantially as shown.

4.*I-n a polishing machine for annular work, the combination of a drivenrotatable work holding chuck, a power driven polishing. wheel having apositively controlled swing naotion over the work derived POSltively anddirectlyfrom the rotation of the work holding chuck, and means for:auto-- matically disconnectin the driving mecha nism between" the 'worholding-chuck and the swinging polishing wheel when the .latter-iswithdrawn; from working contact with the work in thechucki In apolishing machine of the scribed, the, combination of a chuck for car-"rying a stove rim and means for 'rotating the same, a slide with meansfor moving the sametoward and from'the chuck, a bracket pivoted-to theslide and adapted to be swung circularly therefrom, a polishing wheemounted upon the bracket :with means for operating the same and adaptedto bembved ha -s d-.

with the bracket to operate circularly across the face of the rim.

6. In a polishing machine of the class de-. scribed, the combinationwith a chuck for carrying stove rims .and means for rotating the same,of a slide, a swinging bracket pivoted to the slide, a rotatablepolishing wheel mounted upon the bracket, means for swinging the bracketupon its pivot to and from the slide to move the wheel across the faceof a stove rim. v

7 In a polishingmachine of the class described, the combination with achuck for carrying stove rims and means for rotating the same, of aslide, a swinging bracket pivoted to the slide, a standard adjustablymounted upon the bracket, a rotary polishing wheel mounted in thestandard, means for swinging the bracket upon its pivot to and from theslide to' move the wheel across the face of a stove rim. 7

8. In a polishing machine of the class described, the combination of abase, a spindle and chuck mounted thereon, a slide also mounted upon thebase, means for shifting the slide longitudinally upon the bed, abracket pivoted to the slide, a cam and slide rack for operating thebracket, a polishing wheel carried by the bracket and adapted to operateto and from and across the periphery' of the chuck. I

9. In a polishing machine of the class described, the combination ofa-base, a spindle and chuck mountedv thereon, a slide also mounted uponthe base, a shaft with connection for rocking the same, a grooved facedcam mounted upon the shaft and engaging a pins of the slide for shiftingthe same back and forth upon the bed, a bracket'pivoted upon: the slide,means for swinging the bracket upon its pivot to and from the slide, apolishing wheel mounted upon the bracket and having means for drivingthe same. 1

while being moved with the bracket.

10. The combination of a base, a bracket securedthereon, a spindle andchuck carried by the bracket,'a shaft mounted longitudinally in thebase, means for driving boththe spindle and shaft, a slide mounted uponthe base, a cam carried by the slide, connections from the shaft foroperating the cam, a bracket pivoted to the slide and having connectionsto be operated by the cam,a polishing wheel mounted upon the bracket andadapted to move across the periphery of the chuck. 1 I

11. In a stove. rim polishing and bufling machine the combination with abase, a saddle slidably mounted thereon, a bracket pivoted tothe-saddle, a buifing wheel mounted upon the bracket, arotatable chuckalso mounted upon the base for carrying a stove rim means foradjustingboth the chuck and bu g wheel toward and from the pivotal point'of thebracket. I

12. In a polishing and bufiing machine, the combination with a rotatablechuck for carrying a stove rim, a biifling wheel mounted to operatecircularly "across the face of the rim 'and a spring to retain the jbuwheel in yielding operative contact with the rim when mounted upon thechuck.

13. In a polishing machine the combination of a work holding chuck, apower. driven polishing wheel mounted to have a driven swinging motionto coincide approximately with the generating curve ofthe work, andmechanism to control said'swinging movement of the polishing wheel, allsubstantially as shown.

14:. In a polishing machine, an adjustably mounted power drivenrotatable work holding chuck, a power driven resiliently mountedrotatable polishing wheel having a power driven movement transversetothe work, and independent means to control the transverse movement ofthe polishing wheel, substantiallytas shown, I

15. In a polishing m chine, a power driven rotatable-work hol mg chuck,a resiliently mounted rotatable polishing wheel having a power drivenmovement transverse to the movement of the work, andindependent meansitocontrol said transverse -movement of the polishing wheel, substantiallyas shown.

Signed at Bridgeport, in the county of Fairfield, and State ofConnecticut, this 9th day of March, A. 1)., 1910. v

GEORGE L. WALLACE. A WALTER. VAN PATTEN STEIGER.

Witnessesf i C. M; NEWMAN,

RUTH RAYMOND.

